Serving Northern California

Flawless Window Installation in Lafayette

Upgrade your home’s comfort, energy efficiency, and curb appeal with high-quality window installation and replacement.

4.9/5 rating from 56+ online reviews.

Windows That Transform Your Home

Choosing the right windows isn’t just about glass. It’s about comfort, temperature control, noise reduction, resale value, and how your home truly feels day to day. Sidex offers modern material, airtight installation, and custom-fit designs for homeowners looking for window installation in Lafayette, or anyone searching for replacement windows in Northern California.

Our Window Services in Northern California

Replacement Windows

Breathe new life into your home with windows that seal out drafts, reduce noise, and lower monthly bills. Whether you’re searching for Lafayette replacement windows or upgrading anywhere across Northern California, our team ensures a perfect fit every time.

New Window Installation

Our customized window installation offers modern styles, stronger frames, and glass options tailored to your lighting and privacy needs. Ideal for homeowners exploring window installation in Lafayette or nearby areas.

Window Repair & Adjustments

Sticking tracks, cracked frames, condensation, or leaks? We provide fast, reliable window repair in Lafayette and surrounding regions, restoring smooth function and extending the life of your existing windows.

How Our Process Works

Consultation & Assessment

We evaluate your current windows, energy needs, and style preferences. Whether you need window replacement in Lafayette, or live elsewhere in Northern California, our team guides you to the right materials and designs.

Step 1

Planning

Every window is custom-measured for accuracy. We confirm frame conditions, wall depth, and architectural details to avoid surprises during installation.

Step 2

Window Installation/Replacement

Our trained installers remove old windows safely, prep openings, and install your new system with precision, ensuring airtight, weather-resistant performance.

Step 3

Final Check & Cleanup

We inspect alignment, seals, locking mechanisms, and insulation before walking you through maintenance and care. Your home is left spotless and your windows ready to perform.

Step 4

Areas We Serve

We’re proud to offer roofing installation services to over 57 locations across Northern California.

The Bay Area

Our solutions are perfect for upgrading older homes facing draftiness and noise, while meeting the clean aesthetic demands across the Peninsula and East Bay.

South Lake Tahoe

We specialize in extreme weather windows engineered to handle the Sierra Nevada climate to prevent heat loss, and withstand heavy snow and intense UV exposure.

Sacramento Region

Ideal for families dealing with heat, sun exposure, and large windows that demand better temperature control and UV protection.

Common Questions About Windows

What types of windows do you install?

We install vinyl, fiberglass, aluminum-clad, and custom architectural windows depending on your home style and performance goals.

Are replacement windows worth it?

Absolutely. Quality windows improve energy efficiency, reduce noise, boost resale value, and make your home noticeably more comfortable.

Do you serve areas outside Lafayette?

Yes. While we optimize for window installation in Lafayette, we proudly serve all of Northern California.

How long does window replacement take?

Most projects finish within 1–3 days depending on how many windows you’re upgrading.

Do you offer window repair?

Yes. From foggy panes to broken seals and stuck sashes, we provide quick and reliable window repair services.

      EXCELLENT  
   Based on 38 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Tatyana P 
 
 
 
 Trustindex verifies that the original source of the review is Google. 
  
 
      Posted on Google  
   
   Vivi Babenko 
 
 
 
 Trustindex verifies that the original source of the review is Google. My grandparents backyard deck had taken a beating over the years, especially from all the snow and rough weather. It was definitely time for some love, and Sidex really came through for! What stood out most was the crew and how they treated my grandparents like family and were genuinely so kind throughout the whole project. Really glad we chose them!
  
 
      Posted on Google  
   
   Sara Yarmolyuk 
 
 
 
 Trustindex verifies that the original source of the review is Google. Extremely helpful employees and truly have honest work and craftsmanship.
  
 
      Posted on Google  
   
   Valya Stepanov 
 
 
 
 Trustindex verifies that the original source of the review is Google. I can’t say enough good things about Sidex Siding & Decking! From the first phone call to the final walkthrough, the entire experience was outstanding. The team was professional, punctual, and incredibly knowledgeable. They took the time to answer all of my questions, communicated clearly throughout the project, and paid close attention to every detail. The quality of their workmanship exceeded my expectations, and the finished deck looks absolutely amazing. They treated my home with respect, kept the work area clean, and completed everything on schedule. It’s rare to find a company that truly delivers on its promises, but Sidex Siding & Decking did exactly that. If you’re looking for a trustworthy, skilled, and reliable contractor, I highly recommend them. I couldn’t be happier with the results and will definitely use them again for future projects. Five stars all the way!
  
 
      Posted on Google  
   
   Max Gatsmanyuk 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fast and professional
  
 
      Posted on Google  
   
   Vince Carterson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Andrey and Nate were very helpful, would work with Sidex again. I am glad everything went as smooth as they said it would.
  
 
      Posted on Google  
   
   Sava Vashchuk 
 
 
 
 Trustindex verifies that the original source of the review is Google. We recently hired SIDEX to completely replace the old, worn-out siding on our home and we could not be happier with the results. They gave us a highly competitive and transparent quote with no hidden fees.
  
 
      Posted on Google  
   
   Rita Snizhko 
 
 
 
 Trustindex verifies that the original source of the review is Google. We couldn’t be happier with how our new deck turned out! From the very beginning, the whole process was so easy, and the Sidex Construction team was amazing to work with. They really listened to what we wanted and brought our vision to life exactly how we imagined it! Our outdoor space has completely transformed, and it’s now one of our favorite places to relax. It’s exactly what we had in mind for our home, and we honestly couldn’t have asked for a better result. We highly recommend Sidex Construction to anyone looking for quality work!
  
 
      Posted on Google  
   
   Amanda Kilgore 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had a great experience working with Sidex. Nate was super helpful during the in-person site visit and took the time to explain everything clearly without making us feel rushed or pressured. Andrey was also very helpful with scheduling and keeping everything organized throughout the process. The whole team was professional, easy to work with, and communication was solid from start to finish. Really appreciated how smooth everything went. Would definitely recommend Sidex to anyone looking for quality work and good customer service.
  
 
      Posted on Google  
   
   Marjorie Siemsen 
 
 
 
 Trustindex verifies that the original source of the review is Google. Tim did a wonderful job fixing a leak on my skylight windows. Totally professional and very detailed in his work. I would definitely consider him for future work!